COMMELL FS-97A - Manual (Page 52)

FS-97A User’s Manual Watchdog Timer Programming Guide
Watchdog Timer Programming Guide 52
MOV DX,2Fh
MOV AL,08H
OUT DX,AL ; select logical device 8
;
MOV DX,2Eh
MOV AL,0F5H
OUT DX,AL
MOV DX,2Fh
IN AL,DX ;
OR AL,08h ; SELECT MINUTE
MOV AH,AL
MOV DX,2Eh
MOV AL,0F5h
OUT DX,AL
MOV DX,2Fh
MOV AL,AH
OUT DX,AL
MOV DX,2Eh ; SETTING 5 MINUTES
MOV AL,0F6h ; ( LD8-CRF6-P05h )
OUT DX,AL
MOV DX,2Fh
MOV AL,05h
OUT DX,AL
Step 3 . Exit extended function mode
MOV DX,2Eh
MOV AL,0AAH
OUT DX,AL
REMARK :
**** I/O PORT 2Eh --> Index port for programming CR .
2Fh --> Data port for programming CR .
**** LD8-CRF6-P05h :
Program CR index F6h of Logical Device 8
with the value "05h" .